This book presents a theory of attention. According to this theory the relationship between attention and the processes executed in the brain is analogous to the relationship between unison and the processes executed by individual members of an orchestra: Just as no subset of the players in an orchestra can be identified as the ones responsible for unison, so there are no particular processes in the brain that are the implementers of attention. If this is right then attention belongs in the metaphysical category of ‘adverbial phenomena’, and so is not the sort of thing that can be explained by identifying the processes that constitute it. The book therefore provides a case study of the ways in which metaphysical questions and questions about psychological explanation can interact. It also explores the prospects of using the theory of attention to cast explanatory light on consciousness and on the contentfulness of thought.

Includes "List of books indexed" (published also separately)

For the first time, a book has brought together in one easily accessible form the best expressed thoughts that are especially illuminating and pertinent to the discipline of mathematics. Mathematically Speaking: A Dictionary of Quotations provides profound, wise, and witty quotes from the most famous to the unknown. You may not find all the quoted "jewels" that exist, but you will definitely a great many of them here. The extensive author and subject indexes provide you with the perfect tools for locating quotations for practical use or pleasure, and you will soon enjoy discovering what others have said on topics ranging from addition to zero. This book will be a handy reference for the mathematician or scientific reader and the wider public interested in who has said what on mathematics.

Fifty-six items, plus documentary 'supplements', can be considered a biographical as well as theoretical working edition of the origins and development of Korzybski's revolutionary system called "general semantics".